Improvement in machines for planing and grooving wash-board legs



C. T. BRANDON. MACHINES FOR PLANING-AND GROOV'ING WASHBOARD-LEGS.

Patented Sept.18,187'7.

N.195,zo4-.

N. PETERS. PHOTO-LITHOGRAPHER. WASHINGYON. D C.

UNITED STATES ATENT OFFICE.

CHARLES T. BRANDON, OE TORONTO, ONTARIO, CANADA, ASSTGNOR OF ONE-HALEHIS RIGHT To JAMES SAURIN MCMURRAYAND THOMAS RICHARD FULLER, OE SAMEPLACE. i

IMPRovEMENT 1N MAcHmEsrol-i PLANING AND GRoovlNc WASH-BOARD LEGS.

Specification forming part of Letters Patent No. 195,204, datedSeptember 18, 1877 application tiled May 22, 1871.

To all whom it may concern:

Be it known that I, CHARLES THOMAS BRANDON, of the city of Toronto, inthe county' of York, in the Province of Ontario, Canada, mechanicalengineer, have invented a new and useful Wash-Board-Leg Planing andGroovin Machine; and I do hereby declare' that the following is a full,clear, and exact descrip tion, and Fig. 3 a cross-section., ot' amachine constructed according to my invention. 4, '5, '6, 7, and '8 aredetails.

A is the frame of the machine, constructed of any durable material,arranged substantially in the manner shown. B is the drivingpulley, withloose pulley keyed to the drivingshaft B1, placed at one end of theyframe. From this shaft, by means of the pulley B2, motion iscommunicated to the shaft C, )laced near the center of the frame. Thisshaft Gis mounted in bearings upon the end ot' a pivoted frame, C',insuch-manner that theshat't .mayrise and fall, as required, vertically.0n .the shaft C are secured two vsets of pla-ner- Figs.

' knives, D D, the cutting-edges of which are concave, and are, inwidth, left a little larger than `the width of a wash-board leg. lheiinish'these knives will give in cutting, it is evident, must be convex.v

Eis a traveling carriage, iitted betweenand supported upon a pair ofmetal bars, F F.

This carriage, on its under face, is provided with a toothed rack, F',into which is geared a wheel, G. A portion only of the periphery -Ot'the wheel G is toothed, in order that the carriage may be moved forwarda certain xed distance only. The balance of the periphery is cut downbelow thebottom of the teeth,

and permits the carriage to be returned to a starting-point by theweight H. Acontin-unous rotary motion in one directionv'is thusper-'wheels l2 and I3, shaft J lworm J1, and wormwheel J2,l andA shaft K, onwhich Shaft the wheel Gis keyed. The friction-wheel I2 is fitted onafeather, and is, for starting and stopping purposes, thrown in and youtof gear by the lever I3. l

L L are upright shafts, supported in bearings upon framesL1L1,whichtrames are hinged at the lower end to a vbase-piece, L2, andAat the upper end are held in slotted brackets M M, 'the slots m m inwhich brackets permit the shafts to be moved to andfrom the center ofthe machine, as required.

N isa spiral spring,connecting the two upright shafts controlling themovement. The shafts are driven from the shaft ll by the pulleys l:j andL3. To the upper endof -these shafts saws O 0, ot' a thickness equal ytothe Width of the groove to be cut in the leg, are fastened. i

P is a form-plate, fastened to the underside of the carriage E. Theedges of this plate are recessed for an interval, 10 p, equal to the'length of the-groove required' in the washboard leg; andthe positionofthe former and the wash-board legs of the carriage' is so arranged inrelation to the saws O O that when the saws, by means of the recesses pp, are permitted to approach the center of the machine. and out away-thewood, a groove will be formed in the legs ot' the length -of the recess,and in a position on the 'legs which can never vary.

To facilitate the movement of the shafts L L in and out ot' the recessesp p, frictionrollersl l are `fastened lto the frames L Ll, andthe endsot' the recesses are rounded; and, in order that the carriage may returnfreely without interfering with the saws, linger-pieces L4 are attachedto the frames L1 and project toward the center, engaging with alling-piece, G1, on each side of theweb of the wheel G. Thesefilling-pieces keep the saws clear of the form on the return-stroke ofthe carriage.

The carriage E is' provided with a midfeather, El, projecting a suitabledistance above the face of the bars F. One end of the midfeather istapered to correspond with the required taper on the legs. On thismidfeather the frame and shaft C C are supported by the tapered bearingblock Q, in such manner that the top of the midfeather becomes a form,to the shape of which the knives D D cut the face of the legs. Thetapered end of the form nishes with a block, E2, which block engageswith the ends of the legs and drives them forward.

From the shaft C to the end of the hars F raised side guide-pieces R Rare fitted in the bars F, for the purpose of guiding the legs to thenext or bottom planing-knives S and out of the machine.

The knives S are attached to a head on a shaft, S1, which shaft issupported in adjustable bearings S2 S2, in order that the cut may beregulated, and a section, T, of the face of the bars F, beyond the shaftC, is made adjustable, being mounted on set-screws, by which the facemay be raised to compensate for the thickness of the cut of the knives,and thus allow the legs to be turned out with parallel faces.

T asprings, placed at intervals over the line of the bars F F, for thepurpose of guiding and steadying the legsin their passage through themachine.

In addition to the springs, one or more rubbing blocks may be inserted,as a further guide.

In operation, the blanks (see Fig. 4.) are received of the right lengthand placed on the face of the bars F F in pairs, one on each side of themidfeather. The ends of the blanks are firmly pressed against the blockE2, which block, when the wheel Gr engages with the rack of thecarriage, drives them forward under and past the knives D D.

Immediately after the partly-toothed Wheel G has turned the distance ofits toothed face the carriage is freed, and is, by the weight El,returned to its starting-point, when the operation is repeated. Duringthe forward progress of the carriage the saws O O are drawn inwardly atthe proper interval by the spring N, cutting the side grooves. The nextmovement of the carriage forces the preceding pair of legs forward overthe under cuttingknives, and the following movement pushes them out ofthe machine completed and ready to be worked into the Wash-board.

It will be evident from an inspection ofthe drawings that, although themachine is a double machine, turning out two distinct sets, one for theright-hand and the other for the left-hand side of the wash-board, atone operation, its capacity could be largely and cheaply increased,using the same drivinggearing throughout, by a duplication of thecarriage and attachments and side saws on a slightly modifiedconstruction of frame.

I am aware that the movements of the different essential working partsof my machine could be eected by other mechanical means and motions thanthose given. Therefore Ido not limit my claim to the exact constructionshown but I claim as new and desire to secure by Letters Patentl. Incombination with the horizontallymoving carriage E, provided with formE1, the pivoted frame C,provided with the rounding and tapering cuttersD, arranged and operating substantially in the manner and for thepurpose set forth.

2. The combination, with a horizontallymoving carriagaprovided with formP, ofthe right and left side 'grooving-saws O, arranged and operatingsubstantially as described.

3. In combination with the horizontally moving and feeding carriage E,provided with forms El and P, the rounding and tapering cutters D, theright and left groovin'g-saws O, and the adjustable under cutting-knivesS, substantially as shown and described.

4. The hinged frame C', provided with the cutters D D and taperedbearing-block Q, in combination with the carriage E, provided with theform E', substantially as shown and described.

5. In combination with the continuouslyrevolving partly-toothed wheel G,carriage E, with rack F and weight H, substantially as shown anddescribed.

6. In combination with the partly-toothed revolving wheel G, providedwith the sectional iilling web pieces G', the hinged frames L1, providedwith the projecting finger-pieces L4, substantially as shown anddescribed.

7 The adjustable sectional barsT, arranged to receive the legs afterthey have passed the knives S, substantially in the manner and for thepurpose set forth.

8. The guiding and supporting bars F, in combination with the carriageE, cutters D, and saws O, substantially as shown and described.

9. The combination of the driving-shaft B1, pulleys B2 and I, shaft I1,friction-Wheels I2 I3, shaft J, worm J1, worm-Wheel J2, shaft K, andsectionally-toothed wheel G, with the carriage E, arranged and operatingsubstantially in the manner and for the purpose set forth.

G. T. BRANDON.

Witnesses: v

DONALD C. RiDoU'r, GEO. A. AIBD.

